After help from LK and other good folks on this forum, I was able to get my Viewsat Xtreme up a few weeks ago (Thanks, folks!).
In the last few days, I have noticed some of the channels are not working. For example, NFL Network and several of the PPV channels. What is interesting is that I was not getting the EPG (Guide) for any channel from the start -- now, I am starting to get it for some channels, and it seems to be these channels that I am losing (like, NFL Network). Also, for some other channels that appeared after last night's blind scan, I get "Searching Signal" (for channels like Fox, Chicago).